组合练习各个功能

public class ListViewAdapter extends BaseAdapter{
    private List<Bean> list;
    private Context context;

    public ListViewAdapter(List<Bean> list, Context context) {
        this.list = list;
        this.context = context;
    }

    @Override
    public int getCount() {
        return list.size();
    }

    @Override
    public Object getItem(int position) {
        return list.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View view, ViewGroup parent) {
        view = LayoutInflater.from(context).inflate(R.layout.layout,null);
        TextView text1 = view.findViewById(R.id.text1);
        TextView text2 = view.findViewById(R.id.text2);
        text1.setText(list.get(position).getTitle());
        text2.setText(list.get(position).getLikesCount()+"");
        return view;
    }
}

public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private ListViewAdapter adapter;




    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       listView = findViewById(R.id.listview);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        toolbar.setTitle("首页");
        setSupportActionBar(toolbar);
        toolbar.setOnMenuItemClickListener(onMenuItemClickListener);
        
        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setMessage("检测到新版本是否更新");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "更新完毕", Toast.LENGTH_SHORT).show();
            }
        }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "还有更多新乐趣在等你哦", Toast.LENGTH_SHORT).show();
            }
        }).show();


        
        String url = "https://zhuanlan.zhihu.com//api/columns/growthhacker/posts?limit=10&offset=1";
        
        OkHttpUtils.get()
                .url(url)
                .build()
                .execute(new StringCallback() {
                    @Override
                    
                    public void onError(Request request, Exception e) {
                        Toast.makeText(MainActivity.this, "网络连接失败", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    
                    public void onResponse(String response) {
                        
                        List<Bean> list = JSON.parseArray(response, Bean.class);
                        adapter = new ListViewAdapter(list,MainActivity.this);
                        listView.setAdapter(adapter);
                        Log.d("aaa", list.toString());


                    }
                });
        
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            int flagTranslucentStatus = WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS;
            int flagTranslucentNavigation = WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                Window window = getWindow();
                WindowManager.LayoutParams attributes = window.getAttributes();
                attributes.flags |= flagTranslucentNavigation;
                window.setAttributes(attributes);
                getWindow().setStatusBarColor(Color.TRANSPARENT);
            } else {
                Window window = getWindow();
                WindowManager.LayoutParams attributes = window.getAttributes();
                attributes.flags |= flagTranslucentStatus | flagTranslucentNavigation;
                window.setAttributes(attributes);
            }
        }



    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
            
         getMenuInflater().inflate(R.menu.menu,menu);
        return true;
    }

    private Toolbar.OnMenuItemClickListener onMenuItemClickListener = new Toolbar.OnMenuItemClickListener() {
        @Override
        public boolean onMenuItemClick(MenuItem item) {
            switch (item.getItemId()){
                case R.id.action_menu1:
                    Intent intent = new Intent(MainActivity.this,Main2Activity.class);
                    startActivity(intent);
                    break;
                case R.id.action_menu2:
                    Intent intent1 = new Intent(Intent.ACTION_VIEW);
                    intent1.setType("vnd.android-dir/mms-sms");
                    startActivity(intent1);

                    break;
            }
            return true;
        }
    };

}

public class Main2Activity extends AppCompatActivity {
    private WebView webView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        webView = findViewById(R.id.webView);
        webView.loadUrl("https://www.jianshu.com/");
        webView.setWebViewClient(new WebViewClient(){
            @Override
            public boolean shouldOverrideUrlLoading(WebView view, String url) {
                view.loadUrl(url);
                return true;
            }
        });

    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.yu.shixuntext.MainActivity">

    <android.support.v7.widget.Toolbar
        android:paddingTop="20dp"
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#4e64df"

        >



    </android.support.v7.widget.Toolbar>
    <android.support.v4.widget.SwipeRefreshLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <ListView
            android:id="@+id/listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

        </ListView>
    </android.support.v4.widget.SwipeRefreshLayout>

</LinearLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.yu.shixuntext.Main2Activity">
    <WebView
        android:id="@+id/webView"
        android:layout_width="match_parent"
        android:layout_height="match_parent">


    </WebView>
</RelativeLayout>

子布局

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >
    <TextView
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"

        android:text="热门回答"
        android:textSize="15dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <TextView
        android:text="热门回答"
        android:id="@+id/text1"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:textSize="18dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/text2"
        android:layout_marginTop="10dp"
        android:layout_marginLeft="10dp"
        android:text="7"
        android:background="#2f62b4"
        android:textColor="#ffffff"
        android:paddingRight="15dp"
        android:paddingLeft="15dp"
        android:textSize="15dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />


</LinearLayout>

在res中新建menu包创建menu布局

<menu xmlns:android="http://schemas.android.com/apk/res/android">

        <item
            android:id="@+id/action_menu1"
            android:orderInCategory="300"
            android:menuCategory="container"
            android:title="关于"/>
        <item
            android:id="@+id/action_menu2"
            android:orderInCategory="200"
            android:menuCategory="system"
            android:title="分享"/>



</menu>

加入权限

<uses-permission android:name="android.permission.SEND_SMS" />
    <uses-permission android:name="android.permission.INTERNET" />

导入依赖

compile 'com.jcodecraeer:xrecyclerview:1.3.2'
    compile 'com.squareup.okhttp3:okhttp:3.4.1'
    compile 'com.zhy:okhttputils:2.0.0'
    implementation 'com.google.code.gson:gson:2.2.4'